We have used a thermodynamic model to calculate theoretical limiting efficiencies for simple and multiple gap solar cells. The limiting efficiency is 26% for a simple solar cell of hydrogenated amorphous silicon, operating at one Sun sensitivity. For a multiple gap cell made from hydrogenated amorphous silicon, together with a second cell, made from a material with lower band gap, it is 38%. The optimum band gap for the second material is 1.0 eV.
C. Wu and R. M. Williams, "Limiting Efficiencies for Multiple Energy-Gap Quantum Devices," Journal of Applied Physics, vol. 54, no. 11, pp. 6721-6724, American Institute of Physics (AIP), Nov 1983.
The definitive version is available at http://dx.doi.org/10.1063/1.331859
Electrical and Computer Engineering
Keywords and Phrases
Mathematical Models; Thermodynamics; Solar Cells
International Standard Serial Number (ISSN)
Article - Journal
© 1983 American Institute of Physics (AIP), All rights reserved.